Turbine molecular pump bearing block

A technology for turbomolecular pumps and bearing housings, which is applied in the field of bearing housings of turbomolecular pumps and rotors of small turbomolecular pumps. It can solve problems such as vibration reduction of rolling bearings, reduce vibration impact, prolong service life, and reduce vibration. Effect
CN104632691AInactive Publication Date: 2015-05-20INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
Publication Date
2015-05-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a turbine molecular pump bearing block which is applied to the field of high-speed rotating machinery such as small turbine molecular pumps. The turbine molecular pump bearing block comprises a wave spring, a rotor shaft, a rolling ball bearing, a friction plate type radial spring, a bearing block body, a bearing end cover and a damping rubber ring, the friction plate type radial spring is mounted between an outer ring of the rolling ball bearing and an inner hole of the bearing block body, made of metal materials and has elasticity by the aid of friction lugs, vibration energy is dissipated through mutual friction between the friction lugs, so that radial vibration of a bearing is reduced, thermal conductivity is high by the aid of the metal materials, heat on the bearing can be timely dissipated, radial damping and heat transfer are realized by the aid of the friction plate type radial spring, axial and radial loads of the rolling bearing are reduced, and abrasion of the bearing is decreased, so that the service life of the molecular pump is prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of vibration reduction and heat transfer of rolling bearings, and in particular relates to a bearing seat of a turbomolecular pump. The invention can be applied to the support of the rotor of the small turbomolecular pump, and can prolong the service life of the turbomolecular pump. Background technique

[0002] The rotor of the turbomolecular pump generally rotates at a speed of tens of thousands of revolutions, so that the relative speed of the moving and stationary blades is used to drive the gas molecules to obtain an ultra-high vacuum. It generally uses rolling ball bearings as its supporting components, so the vibration wear and temperature rise of the rolling bearings have a great impact on the life of the molecular pump. Generally, vibration reduction and heat conduction are realized by installing elastic elements between the outer ring of the bearing and the bearing seat.

[0003] In order to prol...

Claims

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